Ninety-nine percent of the world's digital communications rely on subsea cables. Fixing them keeps us all connected – and has changed our understanding of the ocean.

Shipwrecks, some of which may contain fuel, are degrading fast because of climate change.

A damning picture emerges from a public hearing into the failure of Oceangate’s Titan submersible.

More and more new species of sharks are being discovered as humanity peers deeper into the oceans.

Humpback whales have been making a conservation comeback – but warming seas are putting their recovery at risk.

Fourteen years after the BP Deepwater Horizon disaster, would we fare any better at cleaning up another huge oil spill?

The wreck of the Titanic is showing clear signs of decay on the sea floor miles below the surface. What will its final fate be?

Aerial footage shows the birds and mammals hunting down a school of fish in the Pacific Ocean.